Moran C, Gillies C B, Nicholas F W
J Hered. 1984 Sep-Oct;75(5):397-402. doi: 10.1093/oxfordjournals.jhered.a109964.
Two fertile male tortoiseshell Burmese cats with atypical coat color distribution were found to have normal 38XY karyotypes. Synaptonemal complex analysis of one of these cats revealed normal meiotic pairing. Progeny data indicated that both cats were transmitting both alleles at the sex-linked orange locus, but with unequal frequencies. For one of these cats, analysis of pedigree and progeny data indicated that gene instability at the orange locus was the only possible explanation for its mosaicism. A third male tortoiseshell Burmese cat with typical tortoiseshell phenotype was found to be 39XXY and sterile.
发现两只具有非典型毛色分布的可育雄性玳瑁缅甸猫具有正常的38XY核型。对其中一只猫进行的联会复合体分析显示减数分裂配对正常。后代数据表明，这两只猫在性连锁橙色基因座上都传递了两个等位基因，但频率不等。对于其中一只猫，系谱和后代数据分析表明，橙色基因座的基因不稳定是其嵌合体的唯一可能解释。发现第三只具有典型玳瑁表型的雄性玳瑁缅甸猫为39XXY且不育。
